Recording and reproducing apparatus

Patent metadata

Field	Value
Publication number	US-9595287-B2
Application number	US-201615014873-A
Country	US
Kind code	B2
Filing date	Feb 3, 2016
Priority date	Feb 27, 2015
Publication date	Mar 14, 2017
Grant date	Mar 14, 2017

Abstract

A recording and reproducing apparatus according to the present disclosure includes a first optical pickup configured to record information on either a land track and a groove track, with respect to a recording medium that is able to be recorded in the land track and the groove track, a second optical pickup configured to record information on a track different from a track recorded by the first optical pickup, and a controller configured to cause the first optical pickup to record information if tracks of both sides of a track that the first optical pickup follows are recorded, and to cause the second optical pickup to record information if tracks of both sides of a track that the second optical pickup follows are recorded.

First claim

What is claimed is:

1. A recording apparatus comprising:
a first optical pickup configured to record information on either a land track or a groove track, with respect to a recording medium that is able to be recorded in both the land track and the groove track;
a second optical pickup configured to record information on the other of either the groove track or the land track that are disposed radially in a predetermined track-width distance from a track recorded by the first optical pickup; and
a controller configured to cause the first optical pickup to record information, if tracks of both sides of a track that the first optical pickup follows are unrecorded, and to cause the second optical pickup to record information, if tracks of both sides of a track that the second optical pickup follows are recorded,
wherein the first optical pickup is disposed before the second optical pickup in a rotation direction of the recording medium, and
wherein the controller causes the second optical pickup to start recording information with a delay of one or more rotations with respect to the first optical pickup, and to record information in a track between tracks recorded by the first optical pickup.

2. The recording apparatus according to claim 1 , wherein the controller causes the first optical pickup to record pseudo data in a period when the second optical pickup does not start recording information.

3. The recording apparatus according to claim 2 ,
wherein the recording medium includes a user data area and other area, and
the controller causes the first optical pickup to record the pseudo data in a track of the other area.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Momoo Kazuo
• Takahashi Yuichi

Classifications

• G11B7/127

  Lasers; Multiple laser arrays {(lasers per se H01S)} · CPC title

• G11B7/0037

  with discs · CPC title

• G11B7/131

  Arrangement of detectors in a multiple array · CPC title

• G11B7/00718 Primary

  Groove and land recording, i.e. user data recorded both in the grooves and on the lands · CPC title

• G11B7/0045

  Recording (G11B7/006, G11B7/0065 take precedence) · CPC title